Allow logd to set logd_prop

Test: logd sets ro.logd.kernel successfully
Change-Id: Ia0afd81627f344f525ac1e26028181f41084485d
diff --git a/public/logd.te b/public/logd.te
index f8dd164..b0acb14 100644
--- a/public/logd.te
+++ b/public/logd.te
@@ -38,6 +38,9 @@
 # expected to be locally cached).
 dontaudit domain runtime_event_log_tags_file:file { map open read };
 
+# Logd sets defaults if certain properties are empty.
+set_prop(logd, logd_prop)
+
 ###
 ### Neverallow rules
 ###